<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" :min="0" controls-position="right"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
        <!--
          v-show：是否显示上传组件
          :key：类似于id，如果一个页面多个图片上传控件，可以做区分
          :url：后台上传的url地址
          @close：关闭上传组件
          @crop-upload-success：上传成功后的回调
          <input type="file" name="file"/>
        -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss/avatar'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="distinguishSaveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>

<script>
import teacherApi from '@/api/edu/teacher'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'
export default {
  name: 'Save',
  components: {
    ImageCropper,
    PanThumb
  },
  data() {
    return {
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: ''
      },
      //! 防止重复提交
      saveBtnDisabled: true,
      isSave: true,
      BASE_API: process.env.BASE_API,
      imagecropperShow: false,
      imagecropperKey: 0
    }
  },
  //! 监听器：TODO
  watch: {
    '$route'(to, form) {
      this.init()
    }
  },
  created() {
    this.init()
  },
  methods: {
    init() {
      if (this.$route.query.dataObj) {
        this.teacher = this.$route.query.dataObj
        this.isSave = false
      }else{ // 多次路由跳转到同一个页面时，组件不会执行created,通过路由监听解决
        this.teacher = {}
      }
    },
    //! 区分：保存，修改
    distinguishSaveOrUpdate() {
      if (this.isSave) {
        this.saveTeacherInfo()
      } else {
        this.updateTeacherInfo()
      }
      this.$router.push({ path: '/edu/teacher/list' })
    },
    //! 保存讲师信息：
    saveTeacherInfo() {
      teacherApi.saveTeacher(this.teacher).then(res => {
        this.$message({
          type: 'success',
          message: '添加成功!'
        })
      })
    },
    //! 更新信息：
    updateTeacherInfo() {
      console.log(this.teacher)
      teacherApi.updateTeacherInfo(this.teacher).then(res => {
        this.$message({
          type: 'success',
          message: '更新成功'
        })
      })
    },
    //! 关闭上传弹框的方法
    close() {
      this.imagecropperShow = false
      // 上传组件初始化,每次有个变化，保证上传成功时点击上传区域清空
      this.imagecropperKey = this.imagecropperKey + 1
    },
    //! 上传成功方法
    cropSuccess(data) {
      this.imagecropperShow = false
      // 上传之后接口返回图片地址
      this.teacher.avatar = data.url
      this.imagecropperKey = this.imagecropperKey + 1
    }
  }
}
</script>

<style scoped>

</style>
